Hundreds of thousands of solid rivets are used to assemble the frame of a modern aircraft. A typical application for solid rivets can be found within the structural parts of aircraft. Solid rivets are used in applications where reliability and safety count. The woman on the left operates an air hammer, while the man on the right holds a bucking bar. Riveting team working on the cockpit shell of a C-47 transport at the plant of North American Aviation.
HIGH STRENGTH FRAME RIVET BOLT INSTALL
A rivet compression tool does not require two people, and is generally the most foolproof way to install solid rivets. This tool is mainly used on rivets close to the edge of the fastened material, since the tool is limited by the depth of its frame. A rivet compression or crimping tool can also deform this type of rivet. Solid rivets consist simply of a shaft and head that are deformed with a hammer or rivet gun. Solid rivets are one of the oldest and most reliable types of fasteners, having been found in archaeological findings dating back to the Bronze Age. There are a number of types of rivets, designed to meet different cost, accessibility, and strength requirements:Ī typical technical drawing of a universal head solid rivet
However, it is much more capable of supporting shear loads (loads perpendicular to the axis of the shaft).įastenings used in traditional wooden boat building, such as copper nails and clinch bolts, work on the same principle as the rivet but were in use long before the term rivet was introduced and, where they are remembered, are usually classified among nails and bolts respectively. To distinguish between the two ends of the rivet, the original head is called the factory head and the deformed end is called the shop head or buck-tail.īecause there is effectively a head on each end of an installed rivet, it can support tension loads. In other words, the pounding or pulling creates a new "head" on the other end by smashing the "tail" material flatter, resulting in a rivet that is roughly a dumbbell shape.
On installation, the rivet is placed in a punched or drilled hole, and the tail is upset, or bucked (i.e., deformed), so that it expands to about 1.5 times the original shaft diameter, holding the rivet in place. The end opposite to the head is called the tail. Before being installed, a rivet consists of a smooth cylindrical shaft with a head on one end. A rivet is a permanent mechanical fastener.
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